Legacy TLDs are fundamentally different from gTLDs. Legacy TLDs are not bought and paid for like gTLDs are, and this means that the risk/reward model for the registrar is completely different, and should stay different. Unlike with new gTLDs, a registrar for .org does not have to consider their potential market; it has been served up to them on a silver platter. Uncapping price increases turns the silver platter into an invitation to feast. Organisations with registered .org domains, many of them non-profits, have established identities and will face very difficult choices in the face of large price increases: do they walk away from their identity in the world, or do they cough up increasingly large sums of money so that the public remembers who they are? I recommend leaving the current price increase cap in place. Even the 10% cap is stretching the limits of "reasonable". Best, -- Jack